In this Feb. 23, 2014 photo, state Rep. Stace Nelson, R-Fulton, talks about his campaign for the U.S. Senate in Sioux Falls, S.D. Nelson is one of five Republicans seeking the seat currently held by ... more 
In this Feb. 23, 2014 photo, state Rep. Stace Nelson, R-Fulton, talks about his campaign for the U.S. Senate in Sioux Falls, S.D. Nelson is one of five Republicans seeking the seat currently held by Sen. Tim Johnson. On Wednesday, March 26, 2014, Secretary of State Jason Gant approved the nominating petitions of the five Republicans, one Democrat and one Independent. (AP Photo/Dirk Lammers) less 
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Associated Press | Photo By Dirk Lammers
Wed, Mar 26, 2014 2:39 PM EDT